Basic HTML Version
278
Location : on right at the bridge of Lampang - Wang Nua Road.
726
sq.km.
WATER YEAR : 2011
WANG RIVER BASIN
Nam Mae Soi at Ban Nong Nao , Lampang (W.17)
Lat 18 - 43 - 13 N Long 99 - 34 - 04 E
Amphoe
Chae Hom
Changwat
Lampang
Ban
Nong Nao
Drainge Area
Water - stage recorder
+292.000 m. (MSL.)
B.M.-H.D.
About 21 meters from the top staff gage.
Elevation
Recording
Arithmetic means of 24 readings
1980 to date
+296.000 m. (MSL.)
Bench Mark
Type of Gage
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
1980 to date
-
1980 to date
Fairly stable because of backwater effect.
No overbank flow.
Records fair.The local weir situated about 500 meters downstream from the gage site.
Stage-discharge relation defined by 46 discharge measurements made in 2011.
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
General Description
Period of Rating
Rated by Flot
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
291.42
291.72
291.64
291.77
294.39
292.39
292.64
292.13
291.92
291.80
291.74
291.63
2
291.42
291.73
291.74
291.73
293.51
292.40
292.93
292.14
291.91
291.81
291.75
291.60
3
291.42
291.74
291.70
291.85
293.10
292.24
292.59
292.09
291.93
291.81
291.75
291.59
4
291.39
291.76
291.69
291.78
292.53
292.17
292.79
292.16
291.92
291.81
291.75
291.58
5
291.39
291.71
291.72
291.72
292.30
292.30
292.67
292.11
291.92
291.77
291.74
291.57
6
291.39
291.69
292.05
291.70
292.21
292.74
292.50
292.10
291.90
291.78
291.70
291.56
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
291.46
291.66
291.85
291.65
292.20
293.44
292.47
292.10
291.89
291.77
291.66
291.56
8
291.47
291.66
291.75
291.59
292.18
292.66
292.47
292.09
291.89
291.77
291.64
291.55
9
291.52
291.69
291.69
291.66
292.18
292.47
292.42
292.07
291.91
291.76
291.65
291.55
10
291.71
293.03
291.67
291.89
292.13
292.35
292.41
292.07
291.90
291.77
291.66
291.55
11
291.61
292.36
291.64
292.20
292.57
292.29
292.38
292.06
291.90
291.76
291.66
291.54
12
291.58
291.96
291.64
291.82
292.45
292.37
292.39
292.06
291.89
291.77
291.66
291.58
13
291.65
291.86
291.64
291.72
292.35
292.63
292.36
292.06
291.88
291.76
291.70
291.63
14
291.69
291.83
291.62
291.76
292.17
292.74
292.33
292.09
291.88
291.77
291.69
291.64
15
291.55
291.80
291.58
292.33
292.12
292.57
292.31
292.05
291.89
291.78
291.69
291.73
16
291.49
291.77
291.60
292.12
292.07
292.42
292.38
292.01
291.83
291.74
291.69
291.65
17
291.44
291.82
291.58
291.98
292.10
292.38
292.42
291.98
291.82
291.74
291.67
291.61
18
291.43
291.86
291.59
291.84
292.14
292.30
292.45
291.98
291.84
291.73
291.69
291.60
19
291.63
291.93
291.63
291.80
292.70
292.37
292.41
291.97
291.84
291.73
291.67
291.57
20
291.64
292.19
291.65
291.93
292.46
292.41
292.36
291.97
291.82
291.72
291.65
291.56
21
291.52
291.87
291.64
291.85
292.36
292.38
292.31
291.97
291.79
291.73
291.67
291.56
22
291.48
291.77
291.64
291.78
292.23
292.46
292.30
291.96
291.80
291.75
291.65
291.54
23
291.60
291.67
291.64
291.72
292.14
292.52
292.28
291.97
291.81
291.74
291.64
291.53
24
291.74
291.66
291.62
291.99
292.11
293.18
292.18
291.95
291.81
291.72
291.64
291.52
25
291.77
291.66
291.58
292.44
292.10
292.81
292.15
291.94
291.82
291.69
291.64
291.51
26
291.82
291.78
291.60
292.01
292.55
292.52
292.14
291.94
291.82
291.70
291.65
291.51
27
291.66
291.71
291.58
291.81
293.11
292.55
292.16
291.93
291.80
291.70
291.65
291.52
28
291.61
291.68
291.59
291.75
292.53
292.88
292.15
291.91
291.77
291.70
291.64
291.52
29
291.57
291.67
291.63
291.73
292.24
292.95
292.16
291.92
291.80
291.70
291.64
291.52
30
291.55
291.69
291.65
291.72
292.70
292.70
292.27
291.92
291.81
291.71
291.50
31
291.67
292.07
292.40
292.18
291.81
291.74
291.52
----------
--------------
Mean
291.55
291.83
291.66
291.86
292.46
292.55
292.39
292.02
291.86
291.75
291.68
291.57
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Max
291.82
293.03
292.05
292.44
294.39
293.44
292.93
292.16
291.93
291.81
291.75
291.73
294.39
Min
291.39
291.66
291.58
291.59
292.07
292.17
292.14
291.91
291.77
291.69
291.64
291.50
291.39
295.27
m. (MSL.) ,
292.00
m. (MSL.) ,
River Bed 291.05
m. (MSL)
296.45
m. (MSL.) ,
296.49
m. (MSL.) ,
Drainage Area 726 Square Kilometers
at 12.00 Hours , on Aug 1 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation